According to scientists, how did early people migrate out of africa and into new places?
a.
they used the wheel.
c.
they used ships.
b.
they used land bridges.
d.
they used technology.

The supreme court serves what important function in the u.s. federalgovernment?

How did geography influence the development of the byzantine empire?

Which of the following describes an effect of world war ll on the united states economy a. automobile companies produced a record number of cars b. many factories had to expand to produce military equipment c. the airplane industry suffered as the allies began using airplanes in combat d.cities with shipyards declined because so many ships had been sent overseas.